5y-2x=-3/-4y+x=12 Can someone help me with this system of equation.

Answers

Answer 1

[tex]-2x+5y +3=0~~~~~~.....(i)\\\\x-4y -12=0~~~~~~,,,,(ii)\\\\\\~~~~~~~~\dfrac{x}{5(-12)-3(-4)} = \dfrac{y}{3\cdot 1 -(-2)(-12)}=\dfrac{1}{(-2)(-4)-5\cdot 1} \\\\\\\implies \dfrac{x}{-60+12}= \dfrac{y}{3-24} = \dfrac1{8-5}\\\\\\\implies -\dfrac{x}{48}=-\dfrac y{21} = \dfrac 1{3}\\\\\\\implies x = -\dfrac{48}{3},~~~ y = -\dfrac{21}{3}\\\\\\\implies x = -16, ~~~~ y = -7[/tex]


Related Questions

central high's marching band has 75 members and the band from northeast high has 90 members. during the halftime show the bands plan to match into the stadium from opposite ends using formations with the same number of rows

Answers

Answer:

The answer would be 0.83 repeated decmal

Step-by-step explanation:

All you got to do is divide the two numbers and it'd give you 0.83 repeated decmal

1.Mary has ( 20xy - 10x²) sweets. She wants to divide the sweets equally among her (5x) friends.

if X=6 and Y=4, how many sweets:

will she give to each friend?​

Answers

Answer:

  4

Step-by-step explanation:

The number each friend will get is the total number divided by the number of friends:

  (20xy -10x²)/5x = (4y -2x) = 2(2y -x)

__

For x=6 and y=4, the number each friend will get is ...

  2(2×4 -6) = 2(2) = 4

Mary will give 4 sweets to each friend.

What is the quotient of the following rational expression?
X^3 + 3x^2 - 4x + 5
——————————
X^2 - 2


A) x + 3 + -2x + 11
————-
x^2 - 2

B) x + 5 + 6x + 5
————
x^2 - 2

C) x + 3 + -6x - 1
————
x^2 - 2

D) x + 3 + 11
————
x^2 - 2




Answers

= 12345678910.987654321=12345678910

The motion of a pendulum for which the maximum displacement from equilibrium varies is an example of simple harmonic motion. True or False

Answers

The motion of a pendulum for which the maximum displacement from equilibrium varies is an example of simple harmonic motion is false.

What is SHM?

A harmonic motion of constant amplitude in which the acceleration is proportional and oppositely directed to the displacement of the body from a position of equilibrium

The statement "The motion of a pendulum for which the maximum displacement from equilibrium varies is an example of simple harmonic motion. " is false.

As, motion of simple pendulum is an example of simple harmonic motion.

But the equilibrium should not varies, then it would be simple harmonic with damped oscillations.

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A department store buys 100 shirts at a cost of ​$2700 and sells them at a selling price of ​$30 each. Find the percent markup.

Answers

Answer:

11.1%

Step-by-step explanation:

buy 100 shirts at 2700

each shirt = 2700/100 = $27

sell at $30 each

mark up = (30-27)/27 = 3/27 = 1/9 = 11.1%

Answer:

300 profit

Step-by-step explanation:

Say the stock closed at $24.50 at expiration and the option was assigned. what would be your effective cost per share for your shares of mklq?

Answers

The effective cost per share for your shares based on the information given will be $24.50.

What is an effective cost per share?

It should be noted that an effective cost per share simply means the exchange of a common stock equivalent when a share is sold.

In this situation, the stock closed at $24.50 at expiration and the option was assigned. Therefore, the effective cost per share for your shares is $24.50

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the value of n is a distance of 3 units from 1 1/2

Answers

Answer:

3

Step-by-step explanation:

Given the question :

The value of n is a distance of 3 units from 1 an 1/2 on a number line click on the number line to the possible values of n

From the context of the expression:

n is the distance which exists between 1 1/2 and 3 units from it;

Which may be ;

1 1/2 - - - - (1 1/2 + 3) = 4 1/2

1 1/2 - - - - - (3 - 1 1/2)

Either way, there exists a distance of 3 units between 1 1/2 and 3 units from it.

Hence, n = 3

Solve problem below please

Answers

Answer:-30

Step-by-step explanation:kinda hard to tell a little shaky so sorry if it is wrong.

-28 - (-6) = -22.
-22 / -11 = 2.

The answer is 2.

The numbers 1-10 are placed in a bag. Each student draws a number and then makes a
statement about the probability.
a. What is the probability of the number being between 2-7?
b. What is the probability of the number being a multiple of 5?
c. Describe what the complement of selecting a 9 represents.
d. If the probability of selecting the number is
3 then what could the question be?
10
If one drink is picked

Answers

Answer:

a. What is the probability of the number being between 2-7?

Step-by-step explanation:

i just have a feeling

The probability of the events are given as 0.6 and 0.2 respectively.

What is probability?

Probability is the branch of Mathematics that deals with the measurement of the chance of occurrence of a random event.

The probability of any event always lie in the close interval of 0 and 1 [0,1].

(a) The total number of elements in sample space are 10.

Then, the probability of getting numbers from 2 - 7 is given as,

P(numbers 2-7) =  Number of favorable outcomes ÷ Total outcomes

⇒ 6 ÷ 10 = 0.6

(b) The multiples of 5 are given as 5 and 10

Then, P (Multiple of 5) = Number of favorable outcomes ÷ Total outcomes

⇒  P (Multiple of 5) = 2/10 = 0.2

(c) The complement of selecting one element represents the selection of all remaining elements in the sample space.

Thus, complement of 9 represents selection of all the remaining numbers  from 1 to 10.

(d) For the probability of 3/10, the question can be asked as to find the probability of selecting numbers from 1 to 3.

Hence, the probabilities of the given events can be found by taking the ratio of favorable outcomes to the total outcomes.

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The area of the parallelogram below is square meters. (4 points) 6 m 7 m 2 m​

Answers

42 if the base is 6 and the 7 is height, while if the base is 7 and the 2 is height the answer is 12 , then , if the 2 is base and then the 6 is height the answer is 12 again

Step-by-step explanation:

thats all

Help pls iready math equation

Answers

Answer:

4 and 5

Step-by-step explanation:

n + 1 > 4

n > 4 - 1

n > 3

For the set { 1, 2 , 3 , 4, 5 }, 4 and 5 are greater than 3.

Hence, 4 and 5 makes the inequality n + 1 > 4 true.

Will mark brainliest!!! Please help, thank you! :)

Answers

Answer:

40 feet

Step-by-step explanation:

d = 1/2 at^2      sub in d = ?      a =  5      t =  4

d = 1/2 * (5)(4)^2

d = 40 feet

A mix of peanuts and raisins contains five peanuts for every two raisins

So if the total number of peanuts and raisins in a mix is 84, calculate the number of peanuts of raisins in the mix.

Answers

Answer:

60 peanuts and 24 raisins.

Step-by-step explanation:

First work out the divisor which is  5 + 2 = 7.

84 / 7 = 12.

So  there are 12 * 2= 24 raisins and 5 * 12 = 60 peanuts.

3)
The probability that Max does not bring his calculator to Maths lesson is 0.2.
Complete the tree diagram for two successive lessons.

Answers

Step-by-step explanation:

that's it b is for brings

b compliment is for doesn't bring

If angle 1 is 127 degrees, what is angle 5?

Answers

Answer:

if angle 1 is 127

then angle 5 is 635

An object has a density of 40 kg/m^3 and a volume of 50 m^3. What is the mass of the object?

Answers

Answer:

2000 kg.

Step-by-step explanation:

Density = mass / volume

-->  mass = density * volume

-->  mass =  40 * 50

-->  mass = 2000 kg.


Need help with this assignment, they give it to me on my algebra class

Answers

Answer:

Can't read it.

olivia orders 6 ham sandwhiches at the deli the total was $30.72 how much did each sandwhich cost

Answers

Answer:

Each sandwich costs $5.12

Step-by-step explanation:

Six sandwiches is $30.72

Divide 30.72 by 6 and you get 5.12

That means that each sandwich costs $5.12

The price of a notebook is 20% less than the price of a book. By
what percent is the price of the book higher than the price of the
notebook?
ASAP!!! HELP PLSSSSSS1

Answers

Answer: 20%

Step-by-step explanation:

I dentist the correct equation that matches the graphs

Answers

At first glance, you'll notice that the line is going from left to right which tells us that the slope will be negative therefore the bottom option can be eliminated.

Knowing that the formula for slope is rise over run, you'll notice that the lines rises by -8 and runs by 3 which means that the slope would be -8/3.

This leaves us a final answer of  [tex]y=-\frac{8}{3}x-4[/tex]

NEED HELP ASP PLEASE HELP

Based on the given exponential function answer the following questions:

f(x) = 12(4/3)x

Answers

The initial value and base value are 12 and 4/3. The function is a growing function. The domain and the range of the function are real numbers.

What is an exponent?

The exponent denotes that the base will rise to a specific level of strength. The base is X, and the power is n.

The exponential function is given below.

f(x) = 12(4/3)ˣ

Then the initial value of the exponential function is 12.

Then the base value of the exponential function is 4/3.

If the base value if greater than 1 then the function is a growing function.

The domain and range of the function are real numbers.

More about the exponent link is given below.

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Please help whoever answers this correctly, I will mark your answer brainliest​

Answers

Answer:

A(-2,2),. B(−1, −2), and C(-6, 1). Graph the triangle. Then graph the triangle after a translation 7 units right and. 3 units up.

Step-by-step explanation:

After translation 7units left and 17unit up ΔXYZ become ΔX'Y'Z' with new coordinates X'(-14,4) , Y'(-10,8) an Z'(-14,12).

What is translation?

" Translation is defined as the moving a geometrical shape by certain distance."

According to the question,

In ΔXYZ,

Coordinates of X =(-7,-13)

Coordinates of Y = (-3 ,-9)

Coordinates of Z = ( -7, -5)

After translation 7units left and 17units up and rotation 270° counterclockwise around the origin

New coordinates as shown in the drawn graph of ΔX'Y'Z'

Coordinates of X' = (-14, 4)

Coordinates of Y' = (-10, 8)

Coordinates of Z' = (-14,12)

Hence, translation 7units left and 17unit up ΔXYZ gives ΔX'Y'Z' with new coordinates X'(-14,4) , Y'(-10,8) an Z'(-14,12).

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30÷4



pls show the working ​

Answers

Answer:

7.5

Step-by-step explanation:

7.5

[tex] \sqrt{30} [/tex]

- 28

------------

20

- 20

--------------

0

--------------

(Not a square root! I just used it to show how its being divided. And also on the left of the '30' is a 4, so 30 divided by 4 and so on.)

Sorry if the answer looks messy!

Answer:

15/2

Step-by-step explanation:

If you need to simplify it/it can't be a decimal then 15/2 would be your answer.

Work:

30/4 = 7.5 (decimal)

15 times 2 = 30 (15 goes into 30 twice evenly)

15/2 is the simplest you can make it without it being uneven.

15/2

Write a cosine function that has a midline of 2, an amplitude of 3 and a period of 7π/4​.
PLS EXPLAIN! THXS!

Answers

Answer:

[tex]y=3\cos(\frac{8}{7}x)+2[/tex]

Step-by-step explanation:

Recall

General cosine function: [tex]y=a\cos(bx+c)+d[/tex][tex]|a|[/tex] represents the amplitude, or the distance between the maximum/minimum of the function and the midline[tex]\frac{2\pi}{|b|}[/tex] represents the period, or the length of a cycle of the function which repeats continuously[tex]-\frac{c}{b}[/tex] is the phase shift/vertical shift[tex]d[/tex] is the midline, or the average between the maximum and the minimum, creating a horizontal center line

We are given that the amplitude is [tex]a=3[/tex] and that the equation of the midline is [tex]d=2[/tex]. Since we know the period to be [tex]\frac{7\pi}{4}[/tex], we need to solve for [tex]b[/tex] by setting up the equation [tex]\frac{7\pi}{4}=\frac{2\pi}{|b|}[/tex]:

[tex]\frac{7\pi}{4}=\frac{2\pi}{|b|}\\\\7\pi b=8\pi\\\\b=\frac{8}{7}[/tex]

Hence, our cosine function will be [tex]y=3\cos(\frac{8}{7}x)+2[/tex]. See the attached graph for a visual.

Simplify square root of 250 times Square root of 2

Answers

Answer:

Step-by-step explanation:

22.36067977

Nate has 4 1/3 yards of fabric. He uses 2.5 yards of fabric to make a pillow. How much fabric does he have left?

Answers

Answer:

1 5/6 yards of fabric.

Step-by-step explanation:

4 1/3 = 13/3

2.5 = 5/2

13/3 - 5/2 = [tex]\frac{26-15}{6} = 11/6[/tex]

What does x=
And what is the angle

Answers

Answer:

If the lines area parallel: x = 69 degrees

Step-by-step explanation:

Answer:

x equals 49°.

outside exterior angle

What is the solution to this equation?

30.16 = 17.56 + 5x

Question 3 options:

6.032


3.512


12.6


2.52

Answers

30.16 - 17.56 is 12.6 then 12.6/5 = 2.52

math...need help soon

Answers

I don’t know the answer but I noticed you name and saw it. Nice name from shiba.

Amelia bought gas for her car. gas cost $3.45 per gallon. amelia bought 12.2 gallons. what was the total cost for amelia's gas?

Answers

The total cost for Amelia’s gas is $42.09.
$3.45*12.2 gal=
$42.09
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